While driving back from taking family to airport, approximately 40 miles the oil light and chime came on while stopped at a red light, as soon as reached I about 800 rpms it went out. Stopped to check oil all was well, no knocking of any kind. Drove the rest of the home putting it neutral at lights an bringing rpms up 800-900. Got home,left it sit about 30 minutes then started it again and no lights came on, checked codes there were none. Dove it short distances to day no warnings. My only concern is that I will be putting 1600 miles on it the next two weeks. My question is this has anyone experienced this problem, does it sound like maybe my sensor is going bad. I have an appointment next week with my local shop to see if they can find a problem, but would like to hear the input from the XK experts. This is the first time this has ever happened.